NAC Is Not Effective In Children With Trichotillomania As It Is In Adults

May 31, 2013 · Posted in Potential Treatments 

girl pulling her own hair

N-acetylcysteine (NAC) is a drug available over-the-counter in health food stores that is effective in a variety of disorders, including trichotillomania (compulsive hair-pulling) in adults. Researcher Michael Block of Yale University reports that, in contrast to NAC’s robust effects in adults, the drug was not effective in children with trichotillomania aged 8 to 17.  However, behavior therapy has been reported to be effective in both adults and children.

Editor’s Note:  Why a drug that is so effective for trichotillomania in adults does not work well or at all in children is not clear. It is even more perplexing given that NAC has shown robust effects on some other childhood disorders, such as irritability and stereotypy in children with autism. However, if this discrepancy and other differences in pharmacological response across demographics are replicated, the reasons for differential response should be investigated.

As many researchers have emphasized, kids are not just shorter adults, but might have entirely different brains that are in a different stage of development. Extrapolating the therapeutic effects that occur in adults to children may not always be a valid strategy.

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